Drinking cup and other receptacles



May 11 1926.

H. M. BURR DRINKING CUP AND OTHER RECEPTACLES Filed Sept. 15. 1923 IO/KEZ A Patented Main,

, UNITED STATES PATENT-OFFICE.

HARRY M. BURR, OF MIDDLETOWN, CONNECTICUT.

DRINKING CUT AND OTHER RECEPTACLES.

Application filed September My invention relates to that class ofreceptacles that are commonly made from pa per, cloth, or other more orless flexible mamoisture,

terials and which materials are, .in their natural state, susceptiblemore or less to or that may be readily penetrated by matter in differentforms, and an object of my invention, among others, is the production ofa receptacle or receptacles that may be made from paper, cloth, or othermore or less flexible materials, which receptacle orreceptacles may berendered water-proof'and free from the action of, heat, I and whichreceptacles shall also be practically free from the penetration ofmat---' ter of various forms, as,-for instance, discase germs.

1 accompanying drawings, in, which terial that Figure 1 is a view inside elevation of a drinking cup embodying my invention.

Figure 2 is a view,vscale'enlarged, in section through a fragment of thecup, the divmensions as to thickness being greatly exaggerated in orderto clearly bring out the invention.

For the purpose of promotin sanitary conditions, it is customar at t epresent time to provide drinking p aces with drinking cups ofinexpensiveconstruction, such which cups. may be discarded immediately after use,and while myinvention is not-lim- V ited in use to a drlnking cup,

as it is readily adapted for use in such a structure,'l' haveselectedsuch for the purpose of illustration and description ofmyinvention herein..

In the manufacture of drinking cups of the kind and. for the purposeabove set out, as well as in the construction ofvarious sorts ofreceptacles and of other devlces, to render:

them sanitary such cups, receptacles and other devices are coated orlined with a mas causesthem to be substantially impervious tomoisture,disease germs and the like, but such coatingmaterial heretoforeresisting to sue employedhasnotbeen of anature to withstand heat to anysubstantial degree.

j By the useof my-present'invention I have provided means'wherebyvarious articles, as

cups of the p'apxer variety are rendered heat extent that heat existingin especially drinking 13, 1923. Serial No 662,368.

liquids will not injure such receptacles, and,

further, receptacles lined or coated with my improved coating will besubstantiallyimpervious to moisture,'disease germs and the like. l. I

In applying my invention a cup 3, or other receptacle or device formedfrom paper or other flexible material, is treated with one or more coatsof my improved coating to be hereinafter described and that possessesrequisites as to pliability and flexibility such as not to impair theordinary use or uses of the'devices to which it is applied. Thismaterial is also free from absorption or giving off of odors. Suchmaterial comprises pyroxyline, or any soluble cellulose material havingsimilar properties, that shall preferably be free from acid, and that isdissolved vby the use of a suitable solvent, and that may or may not bemixed with castor, oil, that shall also preferably be free from acid. Inpreparing these ingredients the pyroxyline or cellulose ester isdissolved with high grade wood alcohol or any other solvent, preferablythat will leave no odor, and when castor oil is included --it will be ina quantity to produce a material having the, desired qualities whenmixed with aproper-quantity of the pyroxyline;

- In practicing my invention I have found the fo lowing proportions ofthe pyroxyline,

alcohol andcastor oil, when the latter .is used, to answ ersatisfactoryrequirements: cups being commonly composed of paper and Toone part of thezpyroxyline or dry soluhis cotton, I add five parts of asolvent, as

wood alcohol or its equivalent, which are thoroughly mixed, and tothislladd one part of castor oil, when the latter is included,

that is, in a mixture I have found to be satisfactory ll take onehundred pounds of the dry soluble cotton (pyroxyline), five hundredpounds of, wood alcohol orother solvent, towhich may be added, ifdesired, one

hundred pounds of castor oil. p In application the cup or, otherreceptacle is treated with the solution to a thickness ter t e last coatcomposed of the ingredient or ingredients above described has beenapplied it then apply a finish coat 5- to three coats of the mixturewill answer all purposes. This provides a coating 4 that 'ma be a pliedin any desired manner.

\ being for the purpose of securing a smooth surface on the object thatshall be sufliciently hard to avoid the collection of foreign mat terand that shall successively resist heat which may be contained inliquids.

In accordance with the provisions of the patent statutes I havedescribed the principles of operation of my invention, together with theprocess which I now consider to represent the best embodiment thereof;but

I desire to have it understood that the process described is onlyillustrative and that the invention may be carried out by other means.

I claim- A drinking cup composed of paper completely covered with acoating composed of a mixture of pyroxylin dissolved in a suitablesolvent and Castor oil, and an outer coating composed of pure pyroxylin.

HARRY it. BURR.

